1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Earth berm creep

  1. Jun 25, 2015 #1
    I'm helping to install an above ground pool. We leveled the ground. This left a 22" berm on the high side. We left an extra foot of space between the berm and the pool edge, but we're concerned it's going to eventually creep down hill and put pressure on the side of the pool.

    How big of an issue is this? Will the water pressure counter the creep, or will the hill push into the side of the pool? What is a cheap way to handle this? (It's a $200 kiddie pool, 48" deep. It's not worth spending thousands of dollars.)

    The soil is loam and clay with a few 4" size stones. It's on a naturally level spot on the side of a mountain in WV.

    The current front runner solutions are:
    • To dig it out every year or two.
    • Build a fence using 4X4s and 5/8ths lumber, then fill the backside with dry quickcrete.
    • Ignore the problem.
     
  2. jcsd
  3. Jun 25, 2015 #2
    Hey,
    Definitely don't ignore the problem because one of my old neighbors had a problem similar to this but left it only to realize some time later that a wall had collapsed from the pressure. Digging it out every year or two would work but its unnecessary. I'd say build the fence with the lumber and use the quickcrete. it can be done fast and is fairly cheap but to be honest if its an above ground pool they are usually made to stay but can move over time so using just lumber by it self could be a good reinforcement
     
  4. Jun 26, 2015 #3

    Baluncore

    User Avatar
    Science Advisor

    If you pack the volume between the soil and the pool wall with a coarse gravel it will be able to drain water and so not present a large hydraulic pressure against the pool wall. Dry gravel does not flow like a soil that contains some clay.
    https://en.wikipedia.org/wiki/French_drain
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook